Hello, I just bought a L2600 and I'm going to change the trans fluid. This is my first Kubota...the manual shows 4 drain plug locations. It also shows two fill locations: one in front of the seat (on top of the trans) and one behind the seat. I assume its a "common reservoir" so can I can fill it from either location? Or do I need to fill both locations? Its a DT transmission. Thanks for the help.